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Upgrade rear-end stability and chassis control with the SuperPro SPF3946K Rear Subframe Mount Bushing Set, engineered specifically for the 2011 BMW 1 Series M. This high-performance polyurethane bushing kit replaces compliant factory rubber mounts to help reduce rear subframe movement, sharpen handling response, and improve power delivery—ideal for spirited street driving, track days, and performance builds.
The BMW 1 Series M benefits significantly from increased rear subframe control. Worn or soft factory mounts can contribute to rear-end “slop,” inconsistent traction, and delayed chassis response. By tightening the subframe interface, this kit supports better feedback, stability under load, and improved driveline response especially on lowered or track-driven setups.
| Part Number | SPF3946K |
|---|---|
| UPC | 9317745039464 |
| Position | Rear Subframe Mount Bushings (Complete Set) |
| Material | SuperPro Polyurethane |
| Vehicle Fitment | 2011 BMW 1 Series M Base (E82/E88) |
| Country of Origin | Australia |
| Warranty | Limited Lifetime |
This part fits:
Expect a slightly firmer feel versus stock rubber mounts. Most owners notice improved handling and stability without excessive harshness for street use.
Yes. Because installation involves subframe work, a professional alignment is recommended to ensure proper geometry and tire wear.
This kit is intended for the 2011 BMW 1 Series M. Fitment for non-M variants can differ verify compatibility before ordering.
This is an advanced job requiring subframe removal and pressing tools. Professional installation is recommended for best results.
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